Magnetic Suppression Core manufactured for your specific application.
Kevlar core for maximum durability and long life
Durable stainless steel wound conductor for maximum horsepower and engine performance
Premium silicone jacketing and boots for the ultimate in high temperature protection
Superior RFI suppression for the most sensitive electronic system
Corrosion resistant stainless steel spark plug and distributor terminals for maximum conductivity.
OE style boots provide a sealed barrier against heat, dirt and moisture
Thunderbolt type ignition


Application : Mercruiser - 5.7L SKI, 8 cylinder, conventional ignition. OMC - 5.0L ('82-'88), 5.7L ('82-'89), 5.7L King cobra ('88), 185 ('75-'80), 200 ('79-'81), 225 ('78), 225 ('78 M models), 230 ('79-'81), 230 I/B LH & RH ('76), 260 ('79-'81 models without closed cooling), 260 LH & 260 I/B RG ('76), 305 I/B LH ('79-'82 V-drive model with closed cooling), 305 & 350 I/B RH - 305 I/B LH ('77-'82 models without closed cooling), 305 & 350 I/B RH ('79-'82 direct drive model with closed cooling), 350 King Cobra ('89), 454 I/B ('79-'82), 8 cylinder, conventional ignition. Volvo - AQ190A, AQ200B-F, AQ211A, AQ225B, D, AQ231A, B, AQ240, AQ255A-F, AQ260A, B, AQ271A-D, AQ290A, AQ311A, B, BB225A-C, BB231A, BB260A-C, BB261A, 8 cylinder, conventional ignition
Replaces OEM # : Mercruiser: 84-816761Q12. OMC: 503752, 503755. Volvo OE# 8757166-7